layout(set = 0, binding = 0) buffer Inputs {
    vec3 sky_color;
    vec3 ground_color;
    float viewport_width;
    float viewport_height;
    vec2 padding;
    vec3 [1920 * 1080] image;
};

void main() {
    uint x = gl_GlobalInvocationID.x;
    uint y = gl_GlobalInvocationID.y;
    uint width = gl_NumWorkGroups.x;
    uint height = gl_NumWorkGroups.y;

    vec2 uv = vec2(float(x) / width, 1.0 - float(y) / height);
    vec2 ndc = vec2(uv * 2.0 - 1.0);

    image[y * width + x] = mix(ground_color, sky_color, uv.y);
}